linux-kernel - Re: Performance regression from switching lock to rw-sem for anon-vma tree

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Date:	Tue, 30 Jul 2013 13:34:11 -0700
From:	Tim Chen <tim.c.chen@...ux.intel.com>
To:	Davidlohr Bueso <davidlohr@...com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Mel Gorman <mgorman@...e.de>, "Shi, Alex" <alex.shi@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michel Lespinasse <walken@...gle.com>,
	Davidlohr Bueso <davidlohr.bueso@...com>,
	"Wilcox, Matthew R" <matthew.r.wilcox@...el.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm <linux-mm@...ck.org>, Dave Chinner <david@...morbit.com>
Subject: Re: Performance regression from switching lock to rw-sem for
 anon-vma tree

On Tue, 2013-07-30 at 12:59 -0700, Davidlohr Bueso wrote:
> cc'ing Dave Chinner for XFS
> 

Davidlohr,

I also wonder it this change benefit your workload.  Will
be interested to know of your performance numbers.

Tim

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